Metro Health Department officials have launched an internal investigation after finding previous complaints about the location of an alleged dog fighting ring busted on Tuesday.

Two unidentified Metro Animal Care and Control officers were placed on paid administrative leave on Wednesday as part of the investigation after department officials found a lack of documented responses for two complaints at a house on Pewitt Drive, Metro Public Health spokesman Brian Todd said.

Metro animal control examines a dog seized from a fighting ring in Bordeaux

On Tuesday, 38 dogs were taken from the Bordeaux home after an alleged dog fighting ring was found there. The lead suspect in the case, Michael A. Davis, 34, was in jail on previous drug charges.

Todd said that the lack of documentation from both complaints — one for animal neglect in 2010 and another for dog fighting in 2013 — caused them to be "very concerned" and led them to launch a full internal investigation.

The animal control officers placed on leave are not believed to have made money tied to the alleged dog fighting ring, Todd said.

Metro Health officials plan to review two to three years of other dog fighting complaints to determine whether the correct procedures and responses were made.